Kenko KK-568B 8-Digit Electronic Calculator Instruction Manual

Introduction

Thank you for choosing the Kenko KK-568B 8-Digit Electronic Calculator. This manual provides essential information for the proper use, maintenance, and troubleshooting of your new calculator. Please read it thoroughly to ensure optimal performance and longevity of the device.

Product Overview

The Kenko KK-568B is a compact 8-digit electronic calculator designed for basic arithmetic operations. It features an auto power-off function to conserve battery life and a clear LCD display.

Figure 1: Kenko KK-568B Calculator Front View. This image displays the calculator with its protective cover open, revealing the 8-digit LCD screen and the arrangement of its keys, including numerical inputs, operational symbols, and memory functions.

Key Components:

• LCD Display: Shows up to 8 digits for calculations.
• ON/C Key: Powers on the calculator and clears the current entry or calculation.
• OFF Key: Powers off the calculator manually.
• Number Keys (0-9): For inputting numerical values.
• Arithmetic Operation Keys (+, -, ×, ÷): For basic mathematical operations.
• Equals Key (=): Displays the result of a calculation.
• Decimal Point Key (.): For inputting decimal numbers.
• Percentage Key (%): For percentage calculations.
• Memory Keys (M+, M-, MRC):
  • M+: Adds the displayed value to the memory.
  • M-: Subtracts the displayed value from the memory.
  • MRC: Recalls the memory value (press once) or clears the memory (press twice).

Setup

Power Source:

The Kenko KK-568B calculator is battery-powered. It is ready for use upon purchase. If the display becomes dim or unresponsive, the battery may need replacement. Refer to the Maintenance section for battery replacement instructions.

Initial Use:

1. Press the ON/C key to turn on the calculator.
2. The display should show "0" or "0.". If not, press ON/C again to clear any previous entries.

Operating Instructions

Basic Arithmetic Operations:

To perform basic calculations, input the first number, then the operation key, the second number, and finally the equals key.

• Addition: 5 + 3 = (Result: 8)
• Subtraction: 10 - 4 = (Result: 6)
• Multiplication: 6 × 7 = (Result: 42)
• Division: 20 ÷ 5 = (Result: 4)

Percentage Calculations:

The % key can be used for various percentage calculations.

• Calculating a percentage of a number: 50 × 10 % = (Result: 5)
• Adding a percentage: 100 + 10 % = (Result: 110)
• Subtracting a percentage: 100 - 10 % = (Result: 90)

Memory Functions:

Use the memory keys to store and recall values for complex calculations.

• M+: Adds the currently displayed number to the memory.
• M-: Subtracts the currently displayed number from the memory.
• MRC (Memory Recall/Clear):
  • Press once to recall the value stored in memory.
  • Press twice consecutively to clear the memory (the "M" indicator on the display will disappear).

Auto Power Off:

To conserve battery life, the calculator will automatically power off after a period of inactivity. Press ON/C to turn it back on.

Maintenance

Cleaning:

Wipe the calculator with a soft, dry cloth. For stubborn dirt, lightly dampen the cloth with water and a mild detergent, then wipe dry immediately. Do not use abrasive cleaners, solvents, or spray directly onto the calculator.

Storage:

Store the calculator in a cool, dry place, away from direct sunlight and extreme temperatures. Keep it away from strong magnetic fields.

Battery Replacement:

The Kenko KK-568B uses a button cell battery. When the display becomes dim or calculations are erratic, it's time to replace the battery.

1. Ensure the calculator is powered off.
2. Locate the battery compartment on the back of the calculator.
3. Carefully open the compartment cover (you may need a small screwdriver).
4. Remove the old battery and insert a new one of the same type, ensuring correct polarity (+/-).
5. Close the battery compartment cover securely.
6. Dispose of the old battery responsibly according to local regulations.

Troubleshooting

Specifications

Warranty and Support

For warranty information or technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your purchase receipt as proof of purchase.